这个奇怪的脑电波信号其实是设备导致的伪迹。
The strange EEG signal was actually an ___artifact caused by the equipment.
考古学家在遗址中发现了许多古代陶器文物。
Archaeologists discovered many ancient pottery ___artifacts at the site.
视频压缩导致画面暗部出现了明显的伪影。
The video compression introduced visible ___artifacts in the dark areas of the image.
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